ADVERTISEMENT RETURN TO ISSUEPREVCommunicationNEXTVery Efficient Visible-Light-Induced Uphill Electron Transfer at a Self-Assembled Monolayer with Porphyrin−Ferrocene−Thiol Linked MoleculeKohei Uosaki, Toshihiro Kondo, Xue-Qun Zhang, and Masatoshi YanagidaView Author Information Physical Chemistry Laboratory, Division of Graduate School Science, Hokkaido University Sapporo 060, Japan Cite this: J. Am. Chem. Soc. 1997, 119, 35, 8367–8368Publication Date (Web):September 3, 1997Publication...

Based on screw theory, a novel improved inverse-kinematics approach for type of six-DOF serial robot, “Qianjiang I”, is proposed in this paper. The common kinematics model the robot based Denavit-Hartenberg (D-H) notation method while its inverse has inefficient calculation and complicated solution, which cannot meet demands online real-time application. To solve problem, paper presents new to improve efficiency solution by introducing theory. Unlike other methods, only establishes two...

Silicone and acrylic elastomers have received increased attention as dielectric electroactive polymer (EAP) materials for actuator technology. The goal of this work was to develop characterize a new class silicones (DC3481) compare it with elastomers. influence various types hardeners, hardener concentration, prestrain high organic fillers studied by mechanical, electrical electromechanical experiments. Furthermore the temperature dependence viscoelastic properties were investigated. results...

Abstract The orientation of a self-assembled monolayer (SAM) the 5-(4-{8-[(11-mercaptoundecanoyl)ferrocenyl]octyloxy}phenyl)-10,15,20-triphenylporphyrin (PC8FcC11SH) molecule on gold substrate, at which photoinduced up-hill electron transfer with highest quantum efficiency (>10%) ever reported was achieved, investigated using angle-resolved X-ray photoelectron spectroscopy (ARXPS) combined an electrochemical coverage determination. total thickness and distance between Fe outermost...

This article introduces a human–robot interaction controller toward the lower extremity exoskeleton whose aim is to improve tracking performance and drive shadow wearer with less force. To acquire motion intention of wearer, two subsystems are designed: first infer in which phase based on floor reaction force detected by multi-sensor system installed sole, second velocity multi-axis sensor admittance model. An improved single-input fuzzy sliding mode designed, adaptive switching combined...

A new series of acceptor-substituted nickel tetraphenylporphyrins were synthesized in order to examine the efficiency π-conjugation through olefinic linkages β-carbon porphyrins. Perturbed absorption spectra found for substituted porphyrins and may be attributed reduced symmetry porphyrins, although such a factor is acceptor strength dependent. stronger interaction than previously realized β-carbon-substituted exists between porphyrin π-system an olefin-linked electron acceptor.

Abstract The effect of the surface roughness on characteristics self-assembled monolayers (SAMs) was quantitatively examined by measuring photocurrent efficiency at a gold electrode modified with SAM porphyrin–ferrocene–thiol linked molecule as function roughness. higher for flatter substrate. This result confirms importance substrate’s to achieve ordered arrangement functional moieties SAM, i.e., effective control electron/energy transfer.

Localization is a crucial part of autonomous moving for the indoor mobile robot. The natural features ceiling and surrounding environment can serve position estimation. Based on these features, hybrid visual landmarks–based localization method proposed. We combine landmarks-based positioning with ceiling-based odometry. During odometry, orientation computed from parallel between adjacent frames. calculated corresponding point in two consecutive images using perspective-n-point method....

Exoskeleton has drawn a great deal of attention recently because it can augment human strength and track human's motion. The objective this paper is to enhance the performance electro-hydraulic servo system lower-limb exoskeleton, including model uncertainties load disturbance. To accomplish objective, hybrid control method, combining sliding mode controller with RBF neural network, disturbance observer presented. main desired trajectory. network used compensate uncertainties, designed...

Films of some small molecules on hydroxylated silica surfaces have been prepared successfully by the self-assembly technique, using condensation CHO group 4-substituted benzaldehyde with NH2 aniline derivatives. Second-harmonic generation (SHG) was observed in all monolayers chromophores and changed different π-electron systems. The maximum χ(2) 7.9 × 10–10 esu orientation angles chromophore dipoles films were 33–38 °. This method is capable generating multilayer films. For a Z-type...